Hi Lazarus,
I've just been reading your post and the answers you have received, all have good advice for you, LynEyre is always very good as is the advice from TyKey.
However I just thought I would share my situation with you to show how testing can have benefits. I had a routine blood test last October which showed an elevated PSA and that it had doubled since my last blood test. My GP decided to give me a DRE (digital rectal exam) and because of what she found referred me to my local hospital. They then did another DRE and said they believed I had Cancer, I was then given an MRI followed by a biopsy, as the MRI was inconclusive. The results showed that I did indeed have cancer and my urologist then said that due to the type of cancer I would be put on active watch. However after the oncologist looked at the results she said that I required treatment because I had two tumors one a 3+3 the other a 4+3 the 4+3 was the one which concerned her the most as it was very close to the wall of the prostate, her worry was that it could break out from the prostate and become much worse. She then proceeded to advise me on treatment options. I went to see various specialists for each of the treatment types and after a month or so of appointments and discussions with my wife and family decided on surgery.
My friend. on the other hand, had an elevated PSA when he was tested which was much higher than mine, however it turned out that he had a slightly enlarged prostate and a water infection, he was treated with antibiotics and a few months later his PSA had reduced significantly. As a precaution he underwent a biopsy that came back negative after that he was given tablets which helped to reduce the swelling in the prostate and eased his nightly trips to the loo.
My point is that we are all different there is no singular path, a high PSA does not always lead to a cancer diagnosis it could be a sign of infection, MRI scans are not always the most effective in determining cancer either, the technology just isn't there yet. Unfortunately a biopsy, at the moment, is probably the only real way to determine cancer, well it was for me. Hopefully for you it will come back negative and you won't have to worry about treatment options etc.
Like you I was very down and confused but with the help and support of my family and friends and the wonderful people on this website my life began to get better.
I hope everything works out for you
best of luck
Ants